Identification of New Source of Resistance to Powdery Mildew of Indian Mustard and Studying Its Inheritance.

Powdery mildew of Indian mustard (), caused by , is emerging as major problem in India. All the Indian mustard cultivars presently grown in India are highly susceptible to powdery mildew and so far no resistance source has been reported. In this study, with an aim to identify resistant source, 1,020 Indian mustard accessions were evaluated against PMN isolate, at Wellington, The Nilgiris, Tamil Nadu, India under natural hot spot conditions.